The **CSTCC3M20G56-R0** is a specific type of electronic component known as a **Ceramic Resonator**. It is manufactured by Murata Electronics and is primarily used as a timing element in electronic circuits, similar to a quartz crystal but with different physical characteristics. --- ### 1. Component Overview The CSTCC series consists of small, surface-mount (SMD) ceramic resonators that feature **built-in load capacitors**. This eliminates the need for external capacitors, saving PCB space and reducing component count. | Feature | Specification | | :--- | :--- | | **Manufacturer** | Murata Electronics | | **Part Number** | CSTCC3M20G56-R0 | | **Frequency** | 3.20 MHz | | **Frequency Tolerance** | ±0.5% | | **Resonance Resistance** | 50 $\Omega$ (max) | | **Load Capacitance** | 47 pF (Built-in) | | **Operating Temperature** | -20°C to +80°C | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Key Electronic Characteristics #### A. Frequency Control This device oscillates at a fixed frequency of **3.20 MHz**. It is commonly used as a clock source for microcontrollers (MCUs) where extreme precision (like that of a crystal) is not required, but stability is still necessary. #### B. Integrated Capacitors The "G56" suffix in the part number indicates the internal capacitance value. Because the capacitors are integrated into the package: * The circuit design is simplified. * Parasitic capacitance from PCB traces is minimized. * The total footprint on the board is significantly smaller. #### C. Piezoelectric Effect Like other ceramic resonators, it operates on the **piezoelectric effect**. Mechanical vibrations in the ceramic material are converted into electrical signals at a specific resonant frequency. --- ### 3. Application Areas These parts are widely used in consumer electronics where cost-efficiency and space-saving are priorities: * **Microprocessor Clocks:** Providing the heartbeat for 8-bit or 16-bit MCUs. * **Remote Controls:** Used in IR transmitters. * **Automotive Electronics:** (Non-safety critical systems) such as infotainment or window control. * **Household Appliances:** Washing machines, microwave timers, and dishwashers. --- ### 4. Comparison: Ceramic Resonator vs. Crystal | Feature | Ceramic Resonator | Quartz Crystal | | :--- | :--- | :--- | | **Accuracy** | Moderate (±0.5%) | High (±0.001%) | | **Start-up Time** | Very Fast | Slower | | **Cost** | Low | Higher | | **Size** | Small (Built-in Caps) | Larger (Requires external Caps) |